Re: Allowed and preferred modes setting in NM modem connections

[Dan Williams <dcbw redhat com>]

On Fri, 2013-05-31 at 13:56 +0200, Aleksander Morgado wrote:
> Hey,
>
> NetworkManager currently allows to pass allowed/preferred modes (e.g. 2G
> & 3G but 3G preferred) when requesting a connection to ModemManager. I'd
> like to suggest to have these settings removed from the connection
> profile (and therefore not passed to Simple.Connect()), and let system
> preferences related applications (e.g. the GNOME Control Center) handle
> these instead.
>
> Changing these settings just before attempting a connection is not a
> good idea, as the task involves resetting the radio interface in the
> modem and launching registration in the network from scratch, which will
> take some time.
>
> Also, not all devices support changing modes, and not every device
> supporting it allows the same set of allowed+preferred combinations, so
> I don't think it's a good idea to have these kept together with the
> connection profile settings (e.g APN, auth, user, pass), which could
> themselves get re-used (e.g. if the SIM card is switched from one modem
> to another).
>
> What do you guys think?

I agree, lets deprecate the properties in libnm-util/nm-setting-gsm.c
and then remove them from the Simple Connect stuff in
nm-broadband-modem.c, leaving them for old ModemManager.  Anything
talking to new MM can then do what you suggest.

Dan